Valve tool



Fb, -12 1924; j 1,483,074

w.. D. cARRow vALvEVTooL 'Filed July 5., 1922 2 Sheets-Sheet l-JNVENToR.

i TORNEY.

Patented Feb. l2, 1924.

NT OFFICE.

WALTER D. CARROW, OF CHICOPEE FALLS, MASSACHUSETTS.

VALVE TOOL.

Application led July 3, 1922. Serial No. 572,611.

To aZZwwm it may concern.'

Be it known that I, Termin D. CARROW, a citizen of the United States,residing at Chicopee Falls, in the county -of Hampdenv and State ofMassachusetts, have invented certain new and useful Improvements inValve Tools, of which the following is a specification, reference beinghad to the accompanying drawing.

This invention refersto valves and more particularly to devices forlifting valves working under a spring tension. It has among its objectsTo provide a valve lifter that will do its work effectively, and withrelative ease.

-T'o provide such a lifter that its parts will not interfere with thework or function that it is intended for.

To provide such a device with a lifting action that will prevent it fromslipping.

To provide the lifter with an arrangement that will enable the same toautomatically adjust itself to the valve.

To have the lifter adaptable for several different types of valves, inthe one construction.

And many other objects that will become apparent as the invention ismore fully set forth.

This invention slips into the parts of the Valve, embraces around thespring and valve stem bosses, and so close as to appear to be a part ofthe construction. The lever arm is then pushed down with one thumb andthe valve is not only raised but locked when lifted in position. Theparts of the lifter open against the valve boss and leave a large openspace in front of the valvestem so that the pin can be taken out orplaced in with the fingers of the operators hand.

The lifter is then taken out by pressing slightly on the lever arm untilit puts the cam off center, and allows the pressure of the valve springto close it.

In the drawings which illustrate by way of example an embodiment of thisinvention Figure 1 represents a valve lifter embodying this invention,in open position.

Figure 2 is a view of the lifter in side elevation in closed position.

Figure 3 is a plan of Figure l.

Figure 4 is a front elevation of the lifter.

Figure. 5 is a detail of `the valve washer Chair used in this lifter.

Figure 6 is a detail of the base of the lifter.

Figure 7 is a detail of the lever arm of theA lifter.

Figure 8 is a detail of the pivoting pin grid also the part that formsan auxiliary ase. v

Figure 9 is a view of the lifter opened up and raising a convention typeof valve.

Figure 10 is a side view of the lifter opened up.

Figure 11 is a sectional view of modified form, which form ischaracterized by the construction that pins are used instead of legs toguide and keep the lifter chair and base in registry, and also that theauxiliary base is formed as a part of the chair integrally.

Similar reference characters refer to similar parts throughout thedrawings.

In the construction shown, the character l represents the seat of avalve lifter chair which is made to insert under the washer holding avalve spring. The chair has a back 2 preferably semi-circular so as toconform around the spring of the valve and allow the chair seat to gothe whole distance under the washer mentioned.

The chair has legs 3 depending from it downwardly and spaced apart asshown in the drawings. These legs offset in from the back and a pair ofsurfaces 4 are provided. A pair of cams 5 on a lifting lever 6 engagewith the surfaces 4 and raise or lower the entire chair when the leveris operated. The lever has a semi-circular handle as shown that enablesthe lever to be given a long stroke without interfering with the engineparts until it has completed its travel. It joins the sides together andcauses them to act together as well as form a suitable means for theoperator to catch hold of in operating the device. The handle is shownat A pair of raised pieces 9 are provided on the base piece l0 whichconsists of a circular pieceadapted to rest on the frame of the engineabout the valve stern boss. These pieces 9 are adapted to insert betweenthe legs 3 and guide the chair in its travel. The lifter base isfulcrumed to the lever at 11, and 12 is an auxiliary base used on suchvalves as may have a smaller travel than the bottom of the base itselfprovides. This piece 12 also provides a guide to rest anything on thatshould be used in the work.

The operation of the device is as follows: First the valve lifter isclosed into the position shown in Figure 2 and forced between the valvespring washer and the frame of the valve chamber, and around the boss ofthe valve stein. The lever then is pressed downwardly until it strikesthe frame of the engine and there it stays set. When the lever is moveddownwardly its cam 5 presses against'the surface 4 on both sides of thechair, and forces the chair up with the washer and spring. This takesthe tension oif of the valve stem and the pin of the saine can be takenout without any difficulty because unobstructed access can be had to it.In the drawings the pin is silown in black so as to be easily discern- 1e.

In the modiied form the character given to the legs is also given to thesubstitute pin for the same and similarly for the auxiliary base.

While the drawings show one form of the invention, it is not desired tolimit this application for patent to that particular form, otherwisethan limited by the prior art, as many other modifications in theconstruction could be made that would use the same principles and comewithin the scope of the appended claims.

I claim:

1. A device of the class described coinprising a chair for insertionunder the greater ortion of the valve s rinr of an A b engine, asemi-circular handle attached to the chair and arranged to encompass thevalve spring, a plurality of cams having a peaked end portion, saidcams, being arranged to engage with the chair for raising and loweringthe same, and means for operating the cams whereby the cams will actuateunder the chair for raising and lowering the same and for locking in aset position on the peaked portion.

2. A device of the class described comprising a plurality ofvalve-washer-engaging means spaced on the sides of the 'washer and awayfrom the front thereof,

and a ring handle for keeping the means so spaced, said handle beingadapted to dispose adjacent the body of the spring and away from thevalve stein portion, a base having a ring base adapted to rest on theframe portionof the engine, said base being adaptable or adjustable fora plurality of differently sized valve mechanisms, and a mechanism forraising or lowering the engaging means and guided by the said base, andoperating means for the mechanism adapted to actuate spaced' away fromthe washer so as to permit unobstructed access to the valve stem and itspin.

In testimony whereof I hereunto aflix my signature in the presence oftwo witnesses.

WALTER D. CARROW.. Witnesses A. P. CONNOR, DAVID B. Home.

